This Yale football cupid is signed by Charles Twelvetrees, and was published by Ullman in 1909. It is a scarcer Twelvetrees card, and there is a Harvard card like this that is part of the same series. I have only seen the Harvard card listed on eBay once before, and have never seen any other schools that would go along with the series.

The cheer at the bottom is in ancient Greek, and originates from “The Frogs” by Aristophanes.